215572 has 12 divisors (see below), whose sum is σ = 431200. Its totient is φ = 92376.

The previous prime is 215563. The next prime is 215573. The reversal of 215572 is 275512.

215572 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3822 + ... + 3877.

2²¹⁵⁵⁷² is an apocalyptic number.

It is an amenable number.

215572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215572 is a wasteful number, since it uses less digits than its factorization.

215572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7710 (or 7708 counting only the distinct ones).

The product of its digits is 700, while the sum is 22.

The square root of 215572 is about 464.2973185363. The cubic root of 215572 is about 59.9603441664.

It can be divided in two parts, 215 and 572, that added together give a palindrome (787).

The spelling of 215572 in words is "two hundred fifteen thousand, five hundred seventy-two".